. >> reporter: including what happened with a company called china integrated energy, which claimed to operate three big fuel plants in china. according to a lawsuit, these photos taken at one plant show scant activity, and no tanker trucks carrying the fuel to market. >> i filmed about four months and they produced essentially nothing. >> reporter: there was a beehive of activity on with you day, the day investors came to tour. but once the investors are gone, so are the tanker trucks. >> just as dead as before. >> reporter: so they was a complete con job? >> exactly. >> reporter: the company acknowledged there were problems with this factory. a nasdaq official became unhappy when we pressed to know how could so many of them get listed in the first place? >> companies get on exchanges through -- through very -- look, this interview is over right now. it's over right now. >> reporter: what do you mean? >> i'm walking you out the door. >> reporter: the chinese government has sent its reaction to allegations that it was not cooperating with the u.s. in a statement to abc news, it said gr